19439380

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 42154560

約数和(自身を除く): 22715180

約数列:

[1, 2, 4, 5, 10, 20, 67, 89, 134, 163, 178, 268, 326, 335, 356, 445, 652, 670, 815, 890, 1340, 1630, 1780, 3260, 5963, 10921, 11926, 14507, 21842, 23852, 29014, 29815, 43684, 54605, 58028, 59630, 72535, 109210, 119260, 145070, 218420, 290140, 971969, 1943938, 3887876, 4859845, 9719690, 19439380]

約数ペア:

[(1, 19439380), (2, 9719690), (4, 4859845), (5, 3887876), (10, 1943938), (20, 971969), (67, 290140), (89, 218420), (134, 145070), (163, 119260), (178, 109210), (268, 72535), (326, 59630), (335, 58028), (356, 54605), (445, 43684), (652, 29815), (670, 29014), (815, 23852), (890, 21842), (1340, 14507), (1630, 11926), (1780, 10921), (3260, 5963)]